Marine container moisture gain alters physical weight on arrival; commercial settlement under ISO 6741 requires adjusting clean oven-dry mass to standard regain.
Calculate weighted regain by multiplying dry fiber fractions by standard regain rates, applying this factor to clean dry mass for final invoice weight.
Baseline moisture allowances convert raw lot weight into commercial mass using ISO regains to prevent paying yarn prices for ambient water.
Converting laboratory dry chemical reports to standard commercial regain mass prevents tariff misclassification and aligns invoice billing with landed net weight.
Gravimetric oven drying determines accurate polymeric fibre regain by measuring dry mass after removing volatile moisture at specified temperatures.
Commercial mass calculations prevent paying for atmospheric moisture by basing billing on clean dry mass plus official fiber regain allowances.
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